There aren't any leftie Subs or 2 band EBs. Only 3 band SR4H (maple or rosewood or fretless board), SR5H (maple or rosewood or fretless board) or Bongo (multiple pick up configs available) in leftie.
However...............pre-EB lefties (only 2 band) were produced in very very small numbers to order, I think - has Rod Trussbroken any info on these? I remember someone ordering one back in about 1980 - it took well over 6 months if I remember rightly.